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synchronous digital hierarchy network
释义
synchronous digital hierarchy network
Encyclopedia
工学
传送网
释
synchronous digital hierarchy network
同步数字传送网
基于同步数字传送体系组建的传送网。由一些同步数字传送网元组成,在光纤上进行同步数字信息传输、复用和交叉连接的网络,实现网络管理、实时业务监控、不同厂商设备间的互通等功能,提高网络资源利用率。
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emergency shutdown of rocket engine
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emergency shut-off valve
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emergency staircase
emergency standardization
emergency standards
emergency standard system
emergency stop
emergency stop function
emergency stop switch
emergency storage pond of concentrators
emergency supplies
emergency supplies production capacity reserve
emergency supplies reserve
emergency supplies reserve mode
emergency supplies storage
emergency support capacity
emergency-supported system for road traffic malfunction
emergency surveying and mapping
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